diff --git a/drivers/cyw43/README.md b/drivers/cyw43/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..5af6f655806681f5ba3cc0feb03c18e5819389ff
--- /dev/null
+++ b/drivers/cyw43/README.md
@@ -0,0 +1,17 @@
+CYW43xx WiFi SoC driver
+=======================
+
+This is a driver for the CYW43xx WiFi SoC.
+
+There are four layers to the driver:
+
+1. SDIO bus interface, provided by the host device/system.
+
+2. Low-level CYW43xx interface, managing the bus, control messages, Ethernet
+ frames and asynchronous events. Includes download of SoC firmware. The
+ header file `cyw43_ll.h` defines the interface to this layer.
+
+3. Mid-level CYW43xx control, to control and set WiFi parameters and manage
+ events. See `cyw43_ctrl.c`.
+
+4. TCP/IP bindings to lwIP. See `cyw43_lwip.c`.
diff --git a/drivers/cyw43/cyw43.h b/drivers/cyw43/cyw43.h
new file mode 100644
index 0000000000000000000000000000000000000000..d7f08cb5dfeed21d5015ab3e083e0c71f230ab23
--- /dev/null
+++ b/drivers/cyw43/cyw43.h
@@ -0,0 +1,135 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018-2019 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MICROPY_INCLUDED_STM32_CYW43_H
+#define MICROPY_INCLUDED_STM32_CYW43_H
+
+#include "lwip/netif.h"
+#include "lwip/dhcp.h"
+#include "lib/netutils/dhcpserver.h"
+#include "drivers/cyw43/cyw43_ll.h"
+
+// For trace_flags
+#define CYW43_TRACE_ASYNC_EV (0x0001)
+#define CYW43_TRACE_ETH_TX (0x0002)
+#define CYW43_TRACE_ETH_RX (0x0004)
+#define CYW43_TRACE_ETH_FULL (0x0008)
+#define CYW43_TRACE_MAC (0x0010)
+
+// Return value of cyw43_wifi_link_status
+#define CYW43_LINK_DOWN (0)
+#define CYW43_LINK_JOIN (1)
+#define CYW43_LINK_NOIP (2)
+#define CYW43_LINK_UP (3)
+#define CYW43_LINK_FAIL (-1)
+#define CYW43_LINK_NONET (-2)
+#define CYW43_LINK_BADAUTH (-3)
+
+typedef struct _cyw43_t {
+ cyw43_ll_t cyw43_ll;
+
+ uint8_t itf_state;
+ uint32_t trace_flags;
+
+ // State for async events
+ volatile uint32_t wifi_scan_state;
+ uint32_t wifi_join_state;
+ void *wifi_scan_env;
+ int (*wifi_scan_cb)(void*, const cyw43_ev_scan_result_t*);
+
+ // Pending things to do
+ bool pend_disassoc;
+ bool pend_rejoin;
+ bool pend_rejoin_wpa;
+
+ // AP settings
+ uint8_t ap_channel;
+ uint8_t ap_auth;
+ uint8_t ap_ssid_len;
+ uint8_t ap_key_len;
+ uint8_t ap_ssid[32];
+ uint8_t ap_key[64];
+
+ // lwIP data
+ struct netif netif[2];
+ struct dhcp dhcp_client;
+ dhcp_server_t dhcp_server;
+} cyw43_t;
+
+extern cyw43_t cyw43_state;
+extern void (*cyw43_poll)(void);
+extern uint32_t cyw43_sleep;
+
+void cyw43_init(cyw43_t *self);
+void cyw43_deinit(cyw43_t *self);
+
+int cyw43_ioctl(cyw43_t *self, uint32_t cmd, size_t len, uint8_t *buf, uint32_t iface);
+int cyw43_send_ethernet(cyw43_t *self, int itf, size_t len, const void *buf, bool is_pbuf);
+
+int cyw43_wifi_pm(cyw43_t *self, uint32_t pm);
+int cyw43_wifi_link_status(cyw43_t *self, int itf);
+void cyw43_wifi_set_up(cyw43_t *self, int itf, bool up);
+int cyw43_wifi_get_mac(cyw43_t *self, int itf, uint8_t mac[6]);
+int cyw43_wifi_scan(cyw43_t *self, cyw43_wifi_scan_options_t *opts, void *env, int (*result_cb)(void*, const cyw43_ev_scan_result_t*));
+
+static inline bool cyw43_wifi_scan_active(cyw43_t *self) {
+ return self->wifi_scan_state == 1;
+}
+
+int cyw43_wifi_join(cyw43_t *self, size_t ssid_len, const uint8_t *ssid, size_t key_len, const uint8_t *key, uint32_t auth_type, const uint8_t *bssid, uint32_t channel);
+int cyw43_wifi_leave(cyw43_t *self, int itf);
+
+static inline void cyw43_wifi_ap_get_ssid(cyw43_t *self, size_t *len, const uint8_t **buf) {
+ *len = self->ap_ssid_len;
+ *buf = self->ap_ssid;
+}
+
+static inline void cyw43_wifi_ap_set_channel(cyw43_t *self, uint32_t channel) {
+ self->ap_channel = channel;
+}
+
+static inline void cyw43_wifi_ap_set_ssid(cyw43_t *self, size_t len, const uint8_t *buf) {
+ self->ap_ssid_len = MIN(len, sizeof(self->ap_ssid));
+ memcpy(self->ap_ssid, buf, self->ap_ssid_len);
+}
+
+static inline void cyw43_wifi_ap_set_password(cyw43_t *self, size_t len, const uint8_t *buf) {
+ self->ap_key_len = MIN(len, sizeof(self->ap_key));
+ memcpy(self->ap_key, buf, self->ap_key_len);
+}
+
+static inline void cyw43_wifi_ap_set_auth(cyw43_t *self, uint32_t auth) {
+ self->ap_auth = auth;
+}
+
+void cyw43_wifi_ap_get_stas(cyw43_t *self, int *num_stas, uint8_t *macs);
+
+void cyw43_tcpip_init(cyw43_t *self, int itf);
+void cyw43_tcpip_deinit(cyw43_t *self, int itf);
+void cyw43_tcpip_set_link_up(cyw43_t *self, int itf);
+void cyw43_tcpip_set_link_down(cyw43_t *self, int itf);
+int cyw43_tcpip_link_status(cyw43_t *self, int itf);
+
+#endif // MICROPY_INCLUDED_STM32_CYW43_H
diff --git a/drivers/cyw43/cyw43_ctrl.c b/drivers/cyw43/cyw43_ctrl.c
new file mode 100644
index 0000000000000000000000000000000000000000..3a8bbf8646f40532824f41cb17f0dd4ea49988c8
--- /dev/null
+++ b/drivers/cyw43/cyw43_ctrl.c
@@ -0,0 +1,588 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018-2019 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <string.h>
+
+#include "py/mphal.h"
+#include "drivers/cyw43/cyw43.h"
+#include "pendsv.h"
+#include "sdio.h"
+
+#define CYW_ENTER MICROPY_PY_LWIP_ENTER
+#define CYW_EXIT MICROPY_PY_LWIP_EXIT
+
+#ifdef pyb_pin_WL_HOST_WAKE
+#define USE_SDIOIT (0)
+#else
+#define USE_SDIOIT (1)
+#endif
+
+#define CYW43_SLEEP_MAX (50)
+
+#define WIFI_JOIN_STATE_ACTIVE (0x0001)
+#define WIFI_JOIN_STATE_FAIL (0x0002)
+#define WIFI_JOIN_STATE_NONET (0x0003)
+#define WIFI_JOIN_STATE_BADAUTH (0x0004)
+#define WIFI_JOIN_STATE_AUTH (0x0200)
+#define WIFI_JOIN_STATE_LINK (0x0400)
+#define WIFI_JOIN_STATE_KEYED (0x0800)
+#define WIFI_JOIN_STATE_ALL (0x0e01)
+
+cyw43_t cyw43_state;
+void (*cyw43_poll)(void);
+uint32_t cyw43_sleep;
+
+STATIC void cyw43_poll_func(void);
+STATIC void cyw43_wifi_ap_init(cyw43_t *self);
+STATIC void cyw43_wifi_ap_set_up(cyw43_t *self, bool up);
+
+static inline uint32_t cyw43_get_be16(const uint8_t *buf) {
+ return buf[0] << 8 | buf[1];
+}
+
+static inline uint32_t cyw43_get_be32(const uint8_t *buf) {
+ return buf[0] << 24 | buf[1] << 16 | buf[2] << 8 | buf[3];
+}
+
+static inline void cyw43_delay_ms(uint32_t ms) {
+ mp_hal_delay_ms(ms);
+}
+
+/*******************************************************************************/
+// Initialisation and polling
+
+void cyw43_init(cyw43_t *self) {
+ #ifdef pyb_pin_WL_HOST_WAKE
+ mp_hal_pin_config(pyb_pin_WL_HOST_WAKE, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_NONE, 0);
+ #endif
+ mp_hal_pin_config(pyb_pin_WL_REG_ON, MP_HAL_PIN_MODE_OUTPUT, MP_HAL_PIN_PULL_NONE, 0);
+ mp_hal_pin_low(pyb_pin_WL_REG_ON);
+ #ifdef pyb_pin_WL_RFSW_VDD
+ mp_hal_pin_config(pyb_pin_WL_RFSW_VDD, MP_HAL_PIN_MODE_OUTPUT, MP_HAL_PIN_PULL_NONE, 0); // RF-switch power
+ mp_hal_pin_low(pyb_pin_WL_RFSW_VDD);
+ #endif
+
+ cyw43_ll_init(&self->cyw43_ll, self);
+
+ self->itf_state = 0;
+ self->wifi_scan_state = 0;
+ self->wifi_join_state = 0;
+ self->pend_disassoc = false;
+ self->pend_rejoin= false;
+ self->pend_rejoin_wpa = false;
+ self->ap_channel = 3;
+ self->ap_ssid_len = 0;
+ self->ap_key_len = 0;
+
+ cyw43_poll = NULL;
+}
+
+void cyw43_deinit(cyw43_t *self) {
+ CYW_ENTER
+
+ cyw43_ll_bus_sleep(&self->cyw43_ll, true);
+ cyw43_delay_ms(2);
+ cyw43_tcpip_deinit(self, 0);
+ cyw43_tcpip_deinit(self, 1);
+
+ self->itf_state = 0;
+
+ // Disable async polling
+ SDMMC1->MASK &= ~SDMMC_MASK_SDIOITIE;
+ cyw43_poll = NULL;
+
+ #ifdef pyb_pin_WL_RFSW_VDD
+ // Turn the RF-switch off
+ mp_hal_pin_low(pyb_pin_WL_RFSW_VDD);
+ #endif
+
+ // Power down the WL chip and the SDIO bus
+ mp_hal_pin_low(pyb_pin_WL_REG_ON);
+ sdio_deinit();
+
+ CYW_EXIT
+}
+
+STATIC int cyw43_ensure_up(cyw43_t *self) {
+ if (cyw43_poll != NULL) {
+ cyw43_ll_bus_sleep(&self->cyw43_ll, false);
+ return 0;
+ }
+
+ CYW_ENTER
+
+ // Disable the netif if it was previously up
+ cyw43_tcpip_deinit(self, CYW43_ITF_STA);
+ cyw43_tcpip_deinit(self, CYW43_ITF_AP);
+ self->itf_state = 0;
+
+ // Reset and power up the WL chip
+ mp_hal_pin_low(pyb_pin_WL_REG_ON);
+ cyw43_delay_ms(20);
+ mp_hal_pin_high(pyb_pin_WL_REG_ON);
+ cyw43_delay_ms(50);
+
+ // Initialise SDIO bus
+ // IRQ priority only needs to be higher than CYW_ENTER/EXIT protection (PENDSV)
+ sdio_init(NVIC_EncodePriority(NVIC_PRIORITYGROUP_4, 14, 0));
+
+ // Initialise the low-level driver
+ uint8_t mac[6];
+ mp_hal_get_mac(MP_HAL_MAC_WLAN0, mac);
+ int ret = cyw43_ll_bus_init(&self->cyw43_ll, mac);
+
+ if (ret != 0) {
+ CYW_EXIT
+ return ret;
+ }
+
+ // Enable async events from low-level driver
+ cyw43_sleep = CYW43_SLEEP_MAX;
+ cyw43_poll = cyw43_poll_func;
+ #if USE_SDIOIT
+ SDMMC1->MASK |= SDMMC_MASK_SDIOITIE;
+ #else
+ extern void extint_set(const pin_obj_t *pin, uint32_t mode);
+ extint_set(pyb_pin_WL_HOST_WAKE, GPIO_MODE_IT_FALLING);
+ #endif
+
+ CYW_EXIT
+
+ return ret;
+}
+
+// This function must always be executed at the level where CYW_ENTER is effectively active
+STATIC void cyw43_poll_func(void) {
+ if (cyw43_poll == NULL) {
+ // Poll scheduled during deinit, just ignore it
+ return;
+ }
+
+ cyw43_t *self = &cyw43_state;
+ cyw43_ll_process_packets(&self->cyw43_ll);
+
+ if (self->pend_disassoc) {
+ self->pend_disassoc = false;
+ cyw43_ll_ioctl(&self->cyw43_ll, CYW43_IOCTL_SET_DISASSOC, 0, NULL, CYW43_ITF_STA);
+ }
+
+ if (self->pend_rejoin_wpa) {
+ self->pend_rejoin_wpa = false;
+ cyw43_ll_wifi_set_wpa_auth(&self->cyw43_ll);
+ }
+
+ if (self->pend_rejoin) {
+ self->pend_rejoin = false;
+ cyw43_ll_wifi_rejoin(&self->cyw43_ll);
+ self->wifi_join_state = WIFI_JOIN_STATE_ACTIVE;
+ }
+
+ if (cyw43_sleep == 0) {
+ cyw43_ll_bus_sleep(&self->cyw43_ll, true);
+ #if !USE_SDIOIT
+ sdio_deinit(); // save power while WLAN bus sleeps
+ #endif
+ }
+
+ #if USE_SDIOIT
+ SDMMC1->MASK |= SDMMC_MASK_SDIOITIE;
+ #endif
+}
+
+/*******************************************************************************/
+// Callback interface to low-level driver
+
+int cyw43_cb_read_host_interrupt_pin(void *cb_data) {
+ #ifdef pyb_pin_WL_HOST_WAKE
+ return mp_hal_pin_read(pyb_pin_WL_HOST_WAKE);
+ #else
+ return mp_hal_pin_read(pyb_pin_WL_SDIO_1);
+ #endif
+}
+
+void cyw43_cb_ensure_awake(void *cb_data) {
+ cyw43_sleep = CYW43_SLEEP_MAX;
+ #if !USE_SDIOIT
+ if (__HAL_RCC_SDMMC1_IS_CLK_DISABLED()) {
+ __HAL_RCC_SDMMC1_CLK_ENABLE(); // enable SDIO peripheral
+ sdio_enable_high_speed_4bit();
+ }
+ #endif
+}
+
+STATIC const char *cyw43_async_event_name_table[89] = {
+ [0 ... 88] = NULL,
+ [CYW43_EV_SET_SSID] = "SET_SSID",
+ [CYW43_EV_JOIN] = "JOIN",
+ [CYW43_EV_AUTH] = "AUTH",
+ [CYW43_EV_DEAUTH_IND] = "DEAUTH_IND",
+ [CYW43_EV_ASSOC] = "ASSOC",
+ [CYW43_EV_DISASSOC] = "DISASSOC",
+ [CYW43_EV_DISASSOC_IND] = "DISASSOC_IND",
+ [CYW43_EV_LINK] = "LINK",
+ [CYW43_EV_PSK_SUP] = "PSK_SUP",
+ [CYW43_EV_ESCAN_RESULT] = "ESCAN_RESULT",
+ [CYW43_EV_CSA_COMPLETE_IND] = "CSA_COMPLETE_IND",
+ [CYW43_EV_ASSOC_REQ_IE] = "ASSOC_REQ_IE",
+ [CYW43_EV_ASSOC_RESP_IE] = "ASSOC_RESP_IE",
+};
+
+STATIC void cyw43_dump_async_event(const cyw43_async_event_t *ev) {
+ printf("[% 8d] ASYNC(%04x,",
+ mp_hal_ticks_ms(),
+ (unsigned int)ev->flags
+ );
+ if (ev->event_type < MP_ARRAY_SIZE(cyw43_async_event_name_table)
+ && cyw43_async_event_name_table[ev->event_type] != NULL) {
+ printf("%s", cyw43_async_event_name_table[ev->event_type]);
+ } else {
+ printf("%u", (unsigned int)ev->event_type);
+ }
+ printf(",%u,%u,%u)\n",
+ (unsigned int)ev->status,
+ (unsigned int)ev->reason,
+ (unsigned int)ev->interface
+ );
+}
+
+void cyw43_cb_process_async_event(void *cb_data, const cyw43_async_event_t *ev) {
+ cyw43_t *self = cb_data;
+
+ if (self->trace_flags & CYW43_TRACE_ASYNC_EV) {
+ cyw43_dump_async_event(ev);
+ }
+
+ if (ev->event_type == CYW43_EV_ESCAN_RESULT && self->wifi_scan_state == 1) {
+ // Escan result event
+ if (ev->status == 8) {
+ // Partial result
+ int ret = self->wifi_scan_cb(self->wifi_scan_env, &ev->u.scan_result);
+ if (ret != 0) {
+ // TODO need to abort scan, or just ignore any more results
+ }
+ } else if (ev->status == 0) {
+ // Scan complete
+ self->wifi_scan_state = 2;
+ }
+
+ } else if (ev->event_type == CYW43_EV_DISASSOC) {
+ cyw43_tcpip_set_link_down(self, CYW43_ITF_STA);
+ self->wifi_join_state = 0x0000;
+
+ /*
+ } else if (ev->event_type == CYW43_EV_DISASSOC_IND) {
+ if (ev->interface == CYW43_ITF_AP) {
+ // Station disassociated with our AP, let DHCP server know so it can free the IP address
+ dhcp_server_disassoc(&self->dhcp_server, buf + 24);
+ }
+ */
+
+ // WiFi join events
+ } else if (ev->event_type == CYW43_EV_PRUNE) {
+ if (ev->status == 0 && ev->reason == 8) {
+ // RSN mismatch, retry join with WPA auth
+ self->pend_rejoin = true;
+ self->pend_rejoin_wpa = true;
+ pendsv_schedule_dispatch(PENDSV_DISPATCH_CYW43, cyw43_poll_func);
+ }
+ } else if (ev->event_type == CYW43_EV_SET_SSID) {
+ if (ev->status == 0) {
+ // Success setting SSID
+ } else if (ev->status == 3 && ev->reason == 0) {
+ self->wifi_join_state = WIFI_JOIN_STATE_NONET;
+ // No matching SSID found (could be out of range, or down)
+ } else {
+ // Other failure setting SSID
+ self->wifi_join_state = WIFI_JOIN_STATE_FAIL;
+ }
+ } else if (ev->event_type == CYW43_EV_AUTH) {
+ if (ev->status == 0) {
+ self->wifi_join_state |= WIFI_JOIN_STATE_AUTH;
+ } else if (ev->status == 6) {
+ // Unsolicited auth packet, ignore it
+ } else {
+ // Cannot authenticate
+ self->wifi_join_state = WIFI_JOIN_STATE_BADAUTH;
+ }
+ } else if (ev->event_type == CYW43_EV_DEAUTH_IND) {
+ if (ev->status == 0 && ev->reason == 2) {
+ // Deauth, probably because password was wrong; disassociate
+ self->pend_disassoc = true;
+ pendsv_schedule_dispatch(PENDSV_DISPATCH_CYW43, cyw43_poll_func);
+ }
+ } else if (ev->event_type == CYW43_EV_LINK) {
+ if (ev->status == 0) {
+ if (ev->flags & 1) {
+ // Link is up
+ if (ev->interface == CYW43_ITF_STA) {
+ self->wifi_join_state |= WIFI_JOIN_STATE_LINK;
+ } else {
+ cyw43_tcpip_set_link_up(self, ev->interface);
+ }
+ } else {
+ // Link is down
+ cyw43_tcpip_set_link_down(self, ev->interface);
+ }
+ }
+ } else if (ev->event_type == CYW43_EV_PSK_SUP) {
+ if (ev->status == 6) { // WLC_SUP_KEYED
+ self->wifi_join_state |= WIFI_JOIN_STATE_KEYED;
+ } else if ((ev->status == 4 || ev->status == 8 || ev->status == 11) && ev->reason == 15) {
+ // Timeout waiting for key exchange M1/M3/G1
+ // Probably at edge of the cell, retry
+ self->pend_rejoin = true;
+ pendsv_schedule_dispatch(PENDSV_DISPATCH_CYW43, cyw43_poll_func);
+ } else {
+ // PSK_SUP failure
+ self->wifi_join_state = WIFI_JOIN_STATE_BADAUTH;
+ }
+ }
+
+ if (self->wifi_join_state == WIFI_JOIN_STATE_ALL) {
+ // STA connected
+ self->wifi_join_state = WIFI_JOIN_STATE_ACTIVE;
+ cyw43_tcpip_set_link_up(self, CYW43_ITF_STA);
+ }
+}
+
+/*******************************************************************************/
+// Ioctl and Ethernet interface
+
+int cyw43_ioctl(cyw43_t *self, uint32_t cmd, size_t len, uint8_t *buf, uint32_t iface) {
+ int ret = cyw43_ensure_up(self);
+ if (ret) {
+ return ret;
+ }
+
+ CYW_ENTER
+ ret = cyw43_ll_ioctl(&self->cyw43_ll, cmd, len, buf, iface);
+ CYW_EXIT
+
+ return ret;
+}
+
+int cyw43_send_ethernet(cyw43_t *self, int itf, size_t len, const void *buf, bool is_pbuf) {
+ int ret = cyw43_ensure_up(self);
+ if (ret) {
+ return ret;
+ }
+
+ CYW_ENTER
+ ret = cyw43_ll_send_ethernet(&self->cyw43_ll, itf, len, buf, is_pbuf);
+ CYW_EXIT
+
+ return ret;
+}
+
+/*******************************************************************************/
+// WiFi control
+
+STATIC int cyw43_wifi_on(cyw43_t *self, uint32_t country) {
+ int ret = cyw43_ensure_up(self);
+ if (ret) {
+ return ret;
+ }
+
+ #ifdef pyb_pin_WL_RFSW_VDD
+ // Turn the RF-switch on
+ mp_hal_pin_high(pyb_pin_WL_RFSW_VDD);
+ #endif
+
+ CYW_ENTER
+ ret = cyw43_ll_wifi_on(&self->cyw43_ll, country);
+ CYW_EXIT
+
+ return ret;
+}
+
+int cyw43_wifi_pm(cyw43_t *self, uint32_t pm_in) {
+ int ret = cyw43_ensure_up(self);
+ if (ret) {
+ return ret;
+ }
+
+ // pm_in: 0x00adbrrm
+ uint32_t pm = pm_in & 0xf;
+ uint32_t pm_sleep_ret = (pm_in >> 4) & 0xff;
+ uint32_t li_bcn = (pm_in >> 12) & 0xf;
+ uint32_t li_dtim = (pm_in >> 16) & 0xf;
+ uint32_t li_assoc = (pm_in >> 20) & 0xf;
+
+ CYW_ENTER
+ ret = cyw43_ll_wifi_pm(&self->cyw43_ll, pm, pm_sleep_ret, li_bcn, li_dtim, li_assoc);
+ CYW_EXIT
+
+ return ret;
+}
+
+int cyw43_wifi_get_mac(cyw43_t *self, int itf, uint8_t mac[6]) {
+ mp_hal_get_mac(MP_HAL_MAC_WLAN0, &mac[0]);
+ return 0;
+}
+
+#define MAKE_COUNTRY(a, b, rev) ((a) | (b) << 8 | (rev) << 16)
+
+void cyw43_wifi_set_up(cyw43_t *self, int itf, bool up) {
+ if (up) {
+ if (self->itf_state == 0) {
+ uint32_t country;
+ extern char pyb_country_code[2];
+ if (pyb_country_code[0] == '\0' || pyb_country_code[1] == '\0') {
+ country = MAKE_COUNTRY('X', 'X', 17); // default to world-wide (passive ch 12-14)
+ } else {
+ country = MAKE_COUNTRY(pyb_country_code[0], pyb_country_code[1], 0);
+ }
+ cyw43_wifi_on(self, country);
+ cyw43_wifi_pm(self, 10 << 20 | 1 << 16 | 1 << 12 | 20 << 4 | 2);
+ }
+ if (itf == CYW43_ITF_AP) {
+ cyw43_wifi_ap_init(self);
+ cyw43_wifi_ap_set_up(self, true);
+ }
+ if ((self->itf_state & (1 << itf)) == 0) {
+ CYW_ENTER
+ cyw43_tcpip_deinit(self, itf);
+ cyw43_tcpip_init(self, itf);
+ self->itf_state |= 1 << itf;
+ CYW_EXIT
+ }
+ } else {
+ if (itf == CYW43_ITF_AP) {
+ cyw43_wifi_ap_set_up(self, false);
+ }
+ }
+}
+
+int cyw43_wifi_scan(cyw43_t *self, cyw43_wifi_scan_options_t *opts, void *env, int (*result_cb)(void*, const cyw43_ev_scan_result_t*)) {
+ if (self->itf_state == 0) {
+ return -1;
+ }
+
+ cyw43_ensure_up(self);
+
+ CYW_ENTER
+
+ // Set state and callback data
+ self->wifi_scan_state = 1;
+ self->wifi_scan_env = env;
+ self->wifi_scan_cb = result_cb;
+
+ // Start the scan
+ int ret = cyw43_ll_wifi_scan(&self->cyw43_ll, opts);
+
+ CYW_EXIT
+
+ return ret;
+}
+
+int cyw43_wifi_link_status(cyw43_t *self, int itf) {
+ if (itf == CYW43_ITF_STA) {
+ int s = self->wifi_join_state & 0xf;
+ if (s == WIFI_JOIN_STATE_ACTIVE) {
+ return CYW43_LINK_JOIN;
+ } else if (s == WIFI_JOIN_STATE_FAIL) {
+ return CYW43_LINK_FAIL;
+ } else if (s == WIFI_JOIN_STATE_NONET) {
+ return CYW43_LINK_NONET;
+ } else if (s == WIFI_JOIN_STATE_BADAUTH) {
+ return CYW43_LINK_BADAUTH;
+ } else {
+ return CYW43_LINK_DOWN;
+ }
+ } else {
+ return CYW43_LINK_DOWN;
+ }
+}
+
+/*******************************************************************************/
+// WiFi STA
+
+int cyw43_wifi_join(cyw43_t *self, size_t ssid_len, const uint8_t *ssid, size_t key_len, const uint8_t *key, uint32_t auth_type, const uint8_t *bssid, uint32_t channel) {
+ int ret = cyw43_ensure_up(self);
+ if (ret) {
+ return ret;
+ }
+
+ CYW_ENTER
+
+ ret = cyw43_ll_wifi_join(&self->cyw43_ll, ssid_len, ssid, key_len, key, auth_type, bssid, channel);
+
+ if (ret == 0) {
+ // Wait for responses: EV_AUTH, EV_LINK, EV_SET_SSID, EV_PSK_SUP
+ // Will get EV_DEAUTH_IND if password is invalid
+ self->wifi_join_state = WIFI_JOIN_STATE_ACTIVE;
+
+ if (auth_type == 0) {
+ // For open security we don't need EV_PSK_SUP, so set that flag indicator now
+ self->wifi_join_state |= WIFI_JOIN_STATE_KEYED;
+ }
+ }
+
+ CYW_EXIT
+
+ return ret;
+}
+
+int cyw43_wifi_leave(cyw43_t *self, int itf) {
+ // Disassociate with SSID
+ return cyw43_ioctl(self, CYW43_IOCTL_SET_DISASSOC, 0, NULL, itf);
+}
+
+/*******************************************************************************/
+// WiFi AP
+
+STATIC void cyw43_wifi_ap_init(cyw43_t *self) {
+ int ret = cyw43_ensure_up(self);
+ if (ret) {
+ return;
+ }
+
+ CYW_ENTER
+ cyw43_ll_wifi_ap_init(&self->cyw43_ll, self->ap_ssid_len, self->ap_ssid, self->ap_auth, self->ap_key_len, self->ap_key, self->ap_channel);
+ CYW_EXIT
+}
+
+STATIC void cyw43_wifi_ap_set_up(cyw43_t *self, bool up) {
+ int ret = cyw43_ensure_up(self);
+ if (ret) {
+ return;
+ }
+
+ CYW_ENTER
+ cyw43_ll_wifi_ap_set_up(&self->cyw43_ll, up);
+ CYW_EXIT
+}
+
+void cyw43_wifi_ap_get_stas(cyw43_t *self, int *num_stas, uint8_t *macs) {
+ int ret = cyw43_ensure_up(self);
+ if (ret) {
+ return;
+ }
+
+ CYW_ENTER
+ cyw43_ll_wifi_ap_get_stas(&self->cyw43_ll, num_stas, macs);
+ CYW_EXIT
+}
diff --git a/drivers/cyw43/cyw43_ll.h b/drivers/cyw43/cyw43_ll.h
new file mode 100644
index 0000000000000000000000000000000000000000..879367a2edd9e85318673300069f4cf771895fd2
--- /dev/null
+++ b/drivers/cyw43/cyw43_ll.h
@@ -0,0 +1,135 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018-2019 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MICROPY_INCLUDED_STM32_CYW43_LL_H
+#define MICROPY_INCLUDED_STM32_CYW43_LL_H
+
+// IOCTL commands
+#define CYW43_IOCTL_GET_SSID (0x32)
+#define CYW43_IOCTL_GET_CHANNEL (0x3a)
+#define CYW43_IOCTL_SET_DISASSOC (0x69)
+#define CYW43_IOCTL_GET_ANTDIV (0x7e)
+#define CYW43_IOCTL_SET_ANTDIV (0x81)
+#define CYW43_IOCTL_SET_MONITOR (0xd9)
+#define CYW43_IOCTL_GET_VAR (0x20c)
+#define CYW43_IOCTL_SET_VAR (0x20f)
+
+// Async events, event_type field
+#define CYW43_EV_SET_SSID (0)
+#define CYW43_EV_JOIN (1)
+#define CYW43_EV_AUTH (3)
+#define CYW43_EV_DEAUTH_IND (6)
+#define CYW43_EV_ASSOC (7)
+#define CYW43_EV_DISASSOC (11)
+#define CYW43_EV_DISASSOC_IND (12)
+#define CYW43_EV_LINK (16)
+#define CYW43_EV_PRUNE (23)
+#define CYW43_EV_PSK_SUP (46)
+#define CYW43_EV_ESCAN_RESULT (69)
+#define CYW43_EV_CSA_COMPLETE_IND (80)
+#define CYW43_EV_ASSOC_REQ_IE (87)
+#define CYW43_EV_ASSOC_RESP_IE (88)
+
+enum {
+ CYW43_ITF_STA,
+ CYW43_ITF_AP,
+};
+
+typedef struct _cyw43_ev_scan_result_t {
+ uint32_t _0[5];
+ uint8_t bssid[6];
+ uint16_t _1[2];
+ uint8_t ssid_len;
+ uint8_t ssid[32];
+ uint32_t _2[5];
+ uint16_t channel;
+ uint16_t _3;
+ uint8_t auth_mode;
+ int16_t rssi;
+} cyw43_ev_scan_result_t;
+
+typedef struct _cyw43_async_event_t {
+ uint16_t _0;
+ uint16_t flags;
+ uint32_t event_type;
+ uint32_t status;
+ uint32_t reason;
+ uint8_t _1[30];
+ uint8_t interface;
+ uint8_t _2;
+ union {
+ cyw43_ev_scan_result_t scan_result;
+ } u;
+} cyw43_async_event_t;
+
+typedef struct _cyw43_wifi_scan_options_t {
+ uint32_t version;
+ uint16_t action;
+ uint16_t _;
+ uint32_t ssid_len; // 0 to select all
+ uint8_t ssid[32];
+ uint8_t bssid[6];
+ int8_t bss_type; // fill with 0xff to select all
+ int8_t scan_type; // 0=active, 1=passive
+ int32_t nprobes;
+ int32_t active_time;
+ int32_t passive_time;
+ int32_t home_time;
+ int32_t channel_num;
+ uint16_t channel_list[1];
+} cyw43_wifi_scan_options_t;
+
+typedef struct _cyw43_ll_t {
+ uint32_t opaque[528];
+} cyw43_ll_t;
+
+void cyw43_ll_init(cyw43_ll_t *self, void *cb_data);
+void cyw43_ll_deinit(cyw43_ll_t *self);
+
+int cyw43_ll_bus_init(cyw43_ll_t *self, const uint8_t *mac);
+void cyw43_ll_bus_sleep(cyw43_ll_t *self, bool can_sleep);
+void cyw43_ll_process_packets(cyw43_ll_t *self);
+int cyw43_ll_ioctl(cyw43_ll_t *self, uint32_t cmd, size_t len, uint8_t *buf, uint32_t iface);
+int cyw43_ll_send_ethernet(cyw43_ll_t *self, int itf, size_t len, const void *buf, bool is_pbuf);
+
+int cyw43_ll_wifi_on(cyw43_ll_t *self, uint32_t country);
+int cyw43_ll_wifi_pm(cyw43_ll_t *self, uint32_t pm, uint32_t pm_sleep_ret, uint32_t li_bcn, uint32_t li_dtim, uint32_t li_assoc);
+int cyw43_ll_wifi_scan(cyw43_ll_t *self, cyw43_wifi_scan_options_t *opts);
+
+int cyw43_ll_wifi_join(cyw43_ll_t *self, size_t ssid_len, const uint8_t *ssid, size_t key_len, const uint8_t *key, uint32_t auth_type, const uint8_t *bssid, uint32_t channel);
+void cyw43_ll_wifi_set_wpa_auth(cyw43_ll_t *self);
+void cyw43_ll_wifi_rejoin(cyw43_ll_t *self);
+
+int cyw43_ll_wifi_ap_init(cyw43_ll_t *self, size_t ssid_len, const uint8_t *ssid, uint32_t auth, size_t key_len, const uint8_t *key, uint32_t channel);
+int cyw43_ll_wifi_ap_set_up(cyw43_ll_t *self, bool up);
+int cyw43_ll_wifi_ap_get_stas(cyw43_ll_t *self, int *num_stas, uint8_t *macs);
+
+// Callbacks to be provided by mid-level interface
+int cyw43_cb_read_host_interrupt_pin(void *cb_data);
+void cyw43_cb_ensure_awake(void *cb_data);
+void cyw43_cb_process_async_event(void *cb_data, const cyw43_async_event_t *ev);
+void cyw43_cb_process_ethernet(void *cb_data, int itf, size_t len, const uint8_t *buf);
+
+#endif // MICROPY_INCLUDED_STM32_CYW43_LL_H
diff --git a/drivers/cyw43/cyw43_lwip.c b/drivers/cyw43/cyw43_lwip.c
new file mode 100644
index 0000000000000000000000000000000000000000..8f4223029edc77fe009fd6468c561df585f81156
--- /dev/null
+++ b/drivers/cyw43/cyw43_lwip.c
@@ -0,0 +1,197 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018-2019 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <string.h>
+
+#include "py/mphal.h"
+#include "lib/netutils/netutils.h"
+#include "lwip/etharp.h"
+#include "lwip/dns.h"
+#include "lwip/apps/mdns.h"
+#include "drivers/cyw43/cyw43.h"
+
+STATIC void cyw43_ethernet_trace(cyw43_t *self, struct netif *netif, size_t len, const void *data, unsigned int flags) {
+ bool is_tx = flags & NETUTILS_TRACE_IS_TX;
+ if ((is_tx && (self->trace_flags & CYW43_TRACE_ETH_TX))
+ || (!is_tx && (self->trace_flags & CYW43_TRACE_ETH_RX))) {
+ const uint8_t *buf;
+ if (len == (size_t)-1) {
+ // data is a pbuf
+ const struct pbuf *pbuf = data;
+ buf = pbuf->payload;
+ len = pbuf->len; // restricted to print only the first chunk of the pbuf
+ } else {
+ // data is actual data buffer
+ buf = data;
+ }
+
+ if (self->trace_flags & CYW43_TRACE_MAC) {
+ printf("[% 8d] ETH%cX itf=%c%c len=%u", mp_hal_ticks_ms(), is_tx ? 'T' : 'R', netif->name[0], netif->name[1], len);
+ printf(" MAC type=%d subtype=%d data=", buf[0] >> 2 & 3, buf[0] >> 4);
+ for (size_t i = 0; i < len; ++i) {
+ printf(" %02x", buf[i]);
+ }
+ printf("\n");
+ return;
+ }
+
+ if (self->trace_flags & CYW43_TRACE_ETH_FULL) {
+ flags |= NETUTILS_TRACE_PAYLOAD;
+ }
+ netutils_ethernet_trace(MP_PYTHON_PRINTER, len, buf, flags);
+ }
+}
+
+STATIC err_t cyw43_netif_output(struct netif *netif, struct pbuf *p) {
+ cyw43_t *self = netif->state;
+ if (self->trace_flags != 0) {
+ cyw43_ethernet_trace(self, netif, (size_t)-1, p, NETUTILS_TRACE_IS_TX | NETUTILS_TRACE_NEWLINE);
+ }
+ int itf = netif->name[1] - '0';
+ int ret = cyw43_send_ethernet(self, itf, p->tot_len, (void*)p, true);
+ if (ret) {
+ printf("[CYW43] send_ethernet failed: %d\n", ret);
+ return ERR_IF;
+ }
+ return ERR_OK;
+}
+
+STATIC err_t cyw43_netif_init(struct netif *netif) {
+ netif->linkoutput = cyw43_netif_output;
+ netif->output = etharp_output;
+ netif->mtu = 1500;
+ netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET | NETIF_FLAG_IGMP;
+ cyw43_wifi_get_mac(netif->state, netif->name[1] - '0', netif->hwaddr);
+ netif->hwaddr_len = sizeof(netif->hwaddr);
+ return ERR_OK;
+}
+
+void cyw43_tcpip_init(cyw43_t *self, int itf) {
+ ip_addr_t ipconfig[4];
+ #if LWIP_IPV6
+ #define IP(x) ((x).u_addr.ip4)
+ #else
+ #define IP(x) (x)
+ #endif
+ if (itf == 0) {
+ // need to zero out to get isconnected() working
+ IP4_ADDR(&IP(ipconfig[0]), 0, 0, 0, 0);
+ IP4_ADDR(&IP(ipconfig[2]), 192, 168, 0, 1);
+ } else {
+ IP4_ADDR(&IP(ipconfig[0]), 192, 168, 4, 1);
+ IP4_ADDR(&IP(ipconfig[2]), 192, 168, 4, 1);
+ }
+ IP4_ADDR(&IP(ipconfig[1]), 255, 255, 255, 0);
+ IP4_ADDR(&IP(ipconfig[3]), 8, 8, 8, 8);
+ #undef IP
+
+ struct netif *n = &self->netif[itf];
+ n->name[0] = 'w';
+ n->name[1] = '0' + itf;
+ #if LWIP_IPV6
+ netif_add(n, &ipconfig[0].u_addr.ip4, &ipconfig[1].u_addr.ip4, &ipconfig[2].u_addr.ip4, self, cyw43_netif_init, ethernet_input);
+ #else
+ netif_add(n, &ipconfig[0], &ipconfig[1], &ipconfig[2], self, cyw43_netif_init, netif_input);
+ #endif
+ netif_set_hostname(n, "PYBD");
+ netif_set_default(n);
+ netif_set_up(n);
+
+ if (itf == CYW43_ITF_STA) {
+ dns_setserver(0, &ipconfig[3]);
+ dhcp_set_struct(n, &self->dhcp_client);
+ dhcp_start(n);
+ } else {
+ dhcp_server_init(&self->dhcp_server, &ipconfig[0], &ipconfig[1]);
+ }
+
+ #if LWIP_MDNS_RESPONDER
+ // TODO better to call after IP address is set
+ char mdns_hostname[9];
+ memcpy(&mdns_hostname[0], "PYBD", 4);
+ mp_hal_get_mac_ascii(MP_HAL_MAC_WLAN0, 8, 4, &mdns_hostname[4]);
+ mdns_hostname[8] = '\0';
+ mdns_resp_add_netif(n, mdns_hostname, 60);
+ #endif
+}
+
+void cyw43_tcpip_deinit(cyw43_t *self, int itf) {
+ struct netif *n = &self->netif[itf];
+ if (itf == CYW43_ITF_STA) {
+ dhcp_stop(n);
+ } else {
+ dhcp_server_deinit(&self->dhcp_server);
+ }
+ #if LWIP_MDNS_RESPONDER
+ mdns_resp_remove_netif(n);
+ #endif
+ for (struct netif *netif = netif_list; netif != NULL; netif = netif->next) {
+ if (netif == n) {
+ netif_remove(netif);
+ netif->ip_addr.addr = 0;
+ netif->flags = 0;
+ }
+ }
+}
+
+void cyw43_cb_process_ethernet(void *cb_data, int itf, size_t len, const uint8_t *buf) {
+ cyw43_t *self = cb_data;
+ struct netif *netif = &self->netif[itf];
+ if (self->trace_flags) {
+ cyw43_ethernet_trace(self, netif, len, buf, NETUTILS_TRACE_NEWLINE);
+ }
+ if (netif->flags & NETIF_FLAG_LINK_UP) {
+ struct pbuf *p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
+ if (p != NULL) {
+ pbuf_take(p, buf, len);
+ if (netif->input(p, netif) != ERR_OK) {
+ pbuf_free(p);
+ }
+ }
+ }
+}
+
+void cyw43_tcpip_set_link_up(cyw43_t *self, int itf) {
+ netif_set_link_up(&self->netif[itf]);
+}
+
+void cyw43_tcpip_set_link_down(cyw43_t *self, int itf) {
+ netif_set_link_down(&self->netif[itf]);
+}
+
+int cyw43_tcpip_link_status(cyw43_t *self, int itf) {
+ struct netif *netif = &self->netif[itf];
+ if ((netif->flags & (NETIF_FLAG_UP | NETIF_FLAG_LINK_UP))
+ == (NETIF_FLAG_UP | NETIF_FLAG_LINK_UP)) {
+ if (netif->ip_addr.addr != 0) {
+ return CYW43_LINK_UP;
+ } else {
+ return CYW43_LINK_NOIP;
+ }
+ } else {
+ return cyw43_wifi_link_status(self, itf);
+ }
+}
diff --git a/drivers/cyw43/libcyw43.a b/drivers/cyw43/libcyw43.a
new file mode 100644
index 0000000000000000000000000000000000000000..7d0ff93dcbe686e225efd2e119694d13e36ece5b
Binary files /dev/null and b/drivers/cyw43/libcyw43.a differ